Question detail
Which answer avoids confusing chlorine gas with another qualitative analysis result?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Identification of common gases
Question
- A. To enhance the color change
- B. To allow chlorine to dissolve
- C. To make the paper more sensitive
- D. To prevent it from burning
Answer
The correct answer is To allow chlorine to dissolve. It matches chlorine gas because the evidence is damp litmus paper and the expected result is bleaches.
Explanation
The correct option is To allow chlorine to dissolve. Use this as an exam check: if the observation is not bleaches, the conclusion about chlorine gas is not properly supported. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Confusing Chlorine Test with Other Tests
Students often confuse the chlorine test with the tests for hydrogen, oxygen, and carbon dioxide.
To fix this, students should focus on the specific method used for the chlorine test, which involves using damp litmus paper that bleaches when chlorine is present.
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